Frequently asked questions
All you need to know about teeth whitening
Home teeth whitening is a process that lightens discolorations of tooth enamel. This way yellow tooth can get white again.
All of our whitening trays are customized, made by experienced dental lab technicians. In order to get a customized whitening tray, an impression of your teeth will be made by you at home with our easy ready-to-go system. With that impression a whitening tray perfectly tailored to your teeth can be produced. Those trays are not only more comfortable but are also more effective than pre-produced whitening trays (Boil-and-Bite trays).
The custom made whitening trays with the effective whitening solution from opalescence are worn for 2-3 hours per day. Many people notice immediate whitening of their teeth, but the optimal result is achieved after a treatment period of one week.No, these may only be used in the dentists’ office – you can find more information 35% whitening gel here or 20% whitening gel here.
Very important! Only a tray that fits snuggly on your teeth assures safe & effective teeth whitening.
Preproduced whitening trays such as ThermoForm (Boil-n-Bite) Trays perform significantly worse, as the whitening gel may not spread evenly on the teeth. Therefore results might be not consistent. Moreover, the whitening gel might leak out the tray, which can lead to gum irritation or even burns.After Ordering
For your customized whitening trays we will need an impression of your teeth. Our whitening kit includes all necessary materials and detailed instructions to make your dental impressions. Follow these simple steps and send us the impressions back. As you can see in our introduction video it is very easy and requires no medical knowledge:

Once we receive your dental impressions, our dental technicians start manufacturing your customized whitening trays. The whitening trays will be finished within a couple of days and will be mailed back to you.
Now the tooth whitening can begin: Load your tray by expressing one continuous beat of gel from molar to molar. Use no more than ¼ syringe per tray. Leave the tray in for 2 hours. You can also start with 1 hour and then slowly increase the wearing time to 2 hours if you have sensitive teeth. Many people notice immediate whitening of their teeth, but the optimal result is achieved after a treatment period of one week.During the treatment
Load the tray by expressing one continuous beat of gel from molar to molar. Use no more than ¼ syringe per tray. You should wear the 16% Whitening Gel for 2-3 Hours per day.
The Smiletastic Pro set contains 4 syringes which is sufficient for a whitening treatment of one week. This corresponds to the duration of treatment recommended by dentists. Watch our Video and learn in just 1 minute how you can whiten your teeth with Opalescence:
After the Whitening
After whitening, brush your teeth and clean the trays with your toothbrush and water. You should not eat or drink acid-containing foods or beverages for at least 1 hour after the whitening treatment.
To ensure best results, I recommend avoiding coffee, tea, red wine and nicotine throughout the whitening process.
Normally the results last for approximately one year. However, this largely depends on your habits. The consumption of cigarettes or dark beverages (such as coffee or tea), as well as red wine, might discolor your teeth.
However, the whitening treatment can be repeated after 6 months, ideally after 1 year. This way your teeth will be consistently white. You can reorder the gel here.